Metallic packing for stuffing-boxes.



7 PATENTED AUG. 7, 1906. ALSIEMS.

METALLIG PACKING FOR STUPFING BOXES.

APPLIOATION FILED SEPT. 12. 1905.

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UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Aug. 7, 1906.

Application filed September 12, 1905. Serial No. 278,135.

To all whom, it may concern:

Be it known that I, ALBERT SIEMs, foreman, a citizen of the Empire ofAustria-Hungary, residing at Vienna, in the Empire of Austria-Hungary,have invented certain new and useful Improvements in Metallic Packingfor Stuffing Boxes, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to stuffing-box packings entirely made of metal;and it has for its object to prevent the bad effects of thesteam-pressure which forces the rings with detrimental friction againstthe piston-rod.

In the accompanying drawings, forming part of this specification, Figure1 is a section through a stuffing-box of known construction. Fig. 2 is asection through a stuffingbox embodying the new features, as will bedescribed hereinafter and pointed out in the claim.

In these stufling-box packings in which, as shown in Fig. 1, split ringsa a are employed, which are conically formed upon their outer peripheryand which are surrounded by a hopper-shaped liner 1) upon the free lowerend face m, of which the steam acts upwardly in the direction indicatedby the arrow 1, the conical rings a a are tightened up by thetransmissionof the pressure of the flanged collar f onto the rings a, bymeans of appro priate parts 0. In operation, however, there is added tothe pressure with which the parts are assembled, which is transmittedthrough the flanged collar f, that pressure which, as

already stated, arises from the fact that the hopper b is pressed upwardby the steampressure acting upon its lower face we in the direction ofthe arrow 1. By this means the conical rings a a are still morevigorously pressed together. rings a, which is produced by thesteam-pressure, is desirable to a certain extent, as by this means theexpansion of the rings a, which is caused by heating, is nullified. In

This compression of the other respects,- however, its action isprejudicial, because the rings a are pressed against the piston-rod morethan is necessary for forming a tight joint, thereby causing unnecessaryfriction and excessive wear of the rings a and rod 12. Now in order notto entirely prevent this compression of the rings a by the upwardpressure of the hopper-shaped liner, while, on the other hand,preventing it from exceeding a certain limit, in accordance with thepresent invention is arranged, as shown in Figf2, the intermediate partw, acting upon the split rings a a, the said part w being conicallyformed at 2 upon its outer periphery in such a manner that it bearsagainst the conical inner face of the liner 1) and acts upon thislatter, so that its upward displacement can only take place to theextent that the part w is able to penetrate into the hopper Z).

In order that excessive resistance may not be opposed to the slidingupward of the hopper-b, a channel d is formed on the end face of thepart w, so that the conically-formed outer wall 2 is able to yieldsomewhat.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is A packing for stufling-boxes comprising the split conesa, a, and the counterbored ring I) in combination with an intermediatering w adapted to transfer the pressure of the flangecollar f upon thecones a a, having a deep annular groove (1 in its front surface and abevel at the outer edge which corresponds to the bore of the ring I),substantially as described and for the purpose set forth.

Intestimony whereof I have hereunto affixed my signature in presence oftwo witnesses.

ALBERT SIEMS. Witnesses:

FRIEDRICH BINDER, ALVESTO S. HOGUE.

